The Power Suit is a powered battle armor technology
invented by the Chozo.
Samus apparently
wears a modification to the usual Power Suit technology on her many
adventures.[1] This basic suit is equipped with an
Arm Cannon and
Morph Ball
technologies, but the modular nature of the suit allows it to be
augmented with additional weaponry, visors, and defensive and
maneuvering capabilities.[2] The Chozo
scientist Dryn was largely responsible
for the development of the Power Suit.[3] The Chozo
technology at work in the suit make it highly versatile; the Power
Suit may upload data, accept weapons and modifications, and adapt
to the changes immediately.

Because of its modular design, the Power Suit can accept almost
any upgrade, regardless of its background. The Power Suit is
apparently organic, and can be absorbed into Samus's body at any
time, as best shown in the Metroid Manga, Metroid: Other
M, and other Prime cutscenes.

Contents

Other
Appearances

Super Smash
Bros.

Power Suit (Final
Smash)

Power Suit is an attack in Super Smash Bros. Brawl. Power Suit
is Zero
Suit Samus's Final Smash; her most powerful attack requiring
the evasive Smash ball. Once used, Zero Suit Samus does many
somersaults in the air and begins to glow. If an opponent is near
her, they will take constant damage and will be drawn into the
center. Once Samus regains her Power Suit, she lets loose a small
burst of energy that will send enemies flying if they are nearby.
The downside to this attack is that it leaves Samus vulnerable
immediately after its use. Additionally, it takes time to return to
the Zero Suit state, using a Smash Ball or through Smash Taunting.

Trophy
Info

Super
Smash Bros. Brawl

Power Suit Samus:

Zero
Suit Samus's Final Smash. Samus loses her Power Suit when she
fires the Zero Laser, but she can restore it — that is, she
can return from her Zero Suit form to her familiar armored form.
That being said, Zero Suit Samus is very quick with great reach, so
there are tactical reasons to fight as is. If that's your
preference, don't pick up any Smash Balls.

Samus (Power Suit):

Samus in the basic version of the legendary Power Suit, made
for her by the Chozo race.
Samus is most often seen at the beginning of each game in this
suit. The normal Power Suit has the lowest level of protective
power and features no additional functions. She can use the
cannon on her
right arm for power
shots and build up her arsenal through item pickups.

Trivia

References

↑"The
Power Suit is an advanced Chozo exoskeleton modified for use by
Samus Aran." —Inventory (Metroid Prime)

↑"Samus's
Notes:
The Power Suit provides life-support functions and is well shielded
from attack. The modular nature of the Power Suit allows for the
addition os weapons, Visors, and other gear as needed. The Power
Suit's shielding loses energy with each hit: collect energy when
possible to keep the shielding charged." —Samus's Notes
(Metroid Prime)